If you do an advanced search for author: karp and author as phrase: patterson, james (I can never remember Karp's first name) and then click the Z39.50/SRU search button in the results, you will only get the first of the two author terms filled in in the author search field. Along with author and author,phrase we have two flavors of subject mapped to subject, and three flavors of title including series mapped to title, so an even more likely example would be a search for title: wood and series: things that burn to not get every single title with 'wood' in it.

And I want to add one more, because callnum should be mapped to keyword rather than Dewey.